he also requested coordinates for the johnson creek airport which is a remote airstrip here near the town of yellow pine. >> reporter:shortly thereafter, the aircraft disappeared off the radar and hasn't been seen since. for the past few days, search and rescue teams have been scouring this area with ground teams, fixed wing aircraft and helicopters. they've also been using a grid system to coordinate their search. >> reporter:this is very rugged terrain with deep canyons, and steep mountains. also, this google imagry was taken during the summer but right now this area is almost completey covered in snow. >> reporter:finally, after three days of searching, the effort to find the missing plane could be scaled back on thursday. in the newsroom, charles clifford kron 4 news. >> jacqueline: look at the sheet of ice that formed over the dog dish during the night. 1 42,in oakland. freeze warnings are in effect. icy roads are possible, please take your time tomorrow morning. a lot of twenties! 23 in fairfiel d, temperatures to my morning here is forecast san rafael napa up and oakland and s